Hot-blast stove bottom



F. R. McGEE" Aug. 4, 1936.

HOT BLAST STOVE BOTTOM Filed Nov. 20, 1934 2 Sheets-Sheet l Invenfor FEANK E. M EE, f &wud a# Au 4, 1936. F R. MGEE 2,049,816

HOT BLAST STOVE BOTTOM Filed Nov. 20, l934 2 Sheets-Sheet 2 [mentor: FeA/K E. /V-CEE,

Patented Aug. 4, 1936 UNITE STATES PATENT OFFICE 2 Claims.

This invention relates to hot-blast stoves, one of the objects being to provide an improved bottom for supporting the regenerator of such a stove. Other objects may be inferred.

A specific example of a stove embodying the features of the present invention is illustrated by the accompanying drawings, in which Fgure 1 is 'a vertical section of the stove, Figure 2 a cross-section taken from the line II-II in Figure 1 Figure 3 a cross-section taken from the line III- III in Figure 1 and Figure 4 a cross-section taken from the line IV-IV in Figure 3.

The stove illustrated by these drawings is of the center combustion two-pass type, and includes a regenerator l. This regenerator is made of a plurality of brick elements which are constructed and arranged to provide vertical gas passages I A horizontal diaphragm 2 is arranged between the walls of this stove beneath the regenerator l. This diaphragm is built of hollow brick tiles 2 laid and cemented together so as to provide vertical gas passages 2 which are substantially alined with those of the regenerator l, and to provide a thickness suflicient to withstand the Weight of the latter.

The passages Z provided by the diaphragm by reason of its being constructed of the hollow tiles 2 are of at least slightly less cross-section than the gas passages l provided by the regenerator I. structural columns 3 are arranged beneath the diaphgram l so as to support the same at least at points remote from the wall of the stove.

The diaphragm 2 is supported at its outer and inner edges by being cemented to the walls 4 of the the stove, and at other points, as needed, by the structural columns 3. This diaphragm functions as a girder to bridge the spaces between the columns 3 so that the regenerator will have a continuous brick fioor on which to rest. Since both the regenerator and diaphragm are ccnstructed of the same material, the expansion and contraction of the two will be substantially the same so that no relative movement will exist between them. The fact that the gas passages Z provided by the diaphragm 2 are slightly less in cross-section than the gas passages I provided by the regenerator l enables the diaphragm; 2 to function as a gas choke plate which causes a better distribution of the gases to and from the regenerator l.

It is to be understood that the stove itself is of a generally conventional co'nstruction except 5 for the diaphragm E. The cement used to hold the brick hollow tile 2 together and to the walls l of the stove is of the high temperature type usually used in urnace Construction work. The hollow tiles Z are simply rectangular brick 10 elements which have longitudinal passages. To prevent damage to the diaphragm, the structural columns 3 are provided with cap-plates 3 in which holes 3 are formed so as to effect registration with the passages 2 of the diaphragm. 15 As a precaution against displacement of the diaphragm, the walls of the stove may provide shelves, as at d and the diaphragm may rest upon these shelves.

While a specific embodiment of this invention ZO has been shown and described in accordance with the patent statutes, its scope is not to be limited exactly thereto, except as defined by the following claims.

I claim:

1. A hot-blast stove including a brick regenerator providing vertical gas passages, and a horizontal diaphgragm arranged between the walls of said stove beneath said regenerator, said diaphragm being built of hollow brick tiles laid 30 together so as to provide vertical gas passages which are substantially alined with those of said regenerator and to provide a thickness sufficient to permit said diaphragm to function as a girder that can withstand the weight of said 35 regenerator.

2. A hot-blast stove including a brick regenerator providing vertical gas passages, a horizontal diaphragm arranged between the walls of said stove beneath said regenerator, said dia- 40 phragm being built of hollow brick tiles laid and cemented together so as to' provide vertical gas passages which are substantially alined with those of said regenerator and to provide a thickness suicient to permit said diaphragm to unction as a girder that can Withstand the weight' of said regenerator, and structural columns arranged beneath said diaphragm so as to support the same at least at points remote from the walls of said stove.

FRANK R. McGrEE. 

